CN213759970U

CN213759970U - Syringe

Info

Publication number: CN213759970U
Application number: CN202021338699.XU
Authority: CN
Inventors: 吕凤龙; 沈音丽; 孙姝; 周云霞; 黄嬝; 康静; 杨莹池; 吴珍梅; 何俸芸; 王洁莹
Original assignee: Teaching Hospital of Chengdu University of TCM
Current assignee: Teaching Hospital of Chengdu University of TCM
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-07-23
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses an injector, which comprises a needle cylinder, a piston and a piston rod, wherein the needle cylinder is in the shape of an injection needle cylinder, the rear end of the piston is connected with the front end of the piston rod, the outer diameter of the piston is matched with the inner diameter of the needle cylinder, and the outer side of the cylinder wall of the needle cylinder is provided with medicament scale marks; the needle cylinder also comprises a first cavity and a second cavity; a telescopic needle is arranged in the first cavity; the telescopic needle tube wall of the telescopic needle is of a telescopic structure, the rear end of the telescopic needle tube wall is connected with the front end of the tube wall of the second cavity, the second cavity is communicated with a cavity formed after the telescopic needle tube wall is radially expanded to form a third cavity, the side face of the head of the telescopic needle is connected with an adjuster, and the adjuster is matched with the sliding clamping groove. The utility model discloses can adjust the length of syringe needle as required, be favorable to the accurate implementation of operation, can withdraw the syringe needle to the cylinder inside, avoid losing or forgetting to cover the emergence that the needle cap leads to stabbing because of the needle cap, also reduced cross infection's risk simultaneously.

Description

Syringe

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to syringe.

Background

The syringe is a medical apparatus commonly used in clinical medicine. The common syringe comprises a syringe barrel, a needle cap, a needle head, a piston and a piston rod, the needle head is often fixed in length and cannot meet the requirements of various injections, and when the syringe is not used, the needle cap is sometimes forgotten to be covered or is lost, the needle head is exposed outside to cause puncture, and the risk of cross infection also exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a syringe can adjust the length of syringe needle as required, is favorable to the accurate implementation of operation, can withdraw the syringe needle to the cylinder inside, avoids losing or forgetting to cover the emergence that the needle cap leads to stabbing because of the needle cap, has also reduced cross infection's risk simultaneously.

In order to achieve the above purpose, the present invention provides an injector, which comprises a syringe, a piston and a piston rod, wherein the syringe is in the shape of a syringe needle cylinder, the rear end of the piston is connected with the front end of the piston rod, the outer diameter of the piston is adapted to the inner diameter of the syringe, and the outer side of the cylinder wall of the syringe is provided with medicament scale marks;

the needle cylinder also comprises a first cavity and a second cavity, the thickness of the cylinder wall of the first cavity is larger than that of the second cavity, and a sliding clamping groove is formed in the cylinder wall of the first cavity;

a telescopic needle is arranged in the first cavity and comprises a needle head, an adjuster and a telescopic needle tube wall; the telescopic needle tube wall of the telescopic needle is of a telescopic structure, the rear end of the telescopic needle tube wall is connected with the front end of the tube wall of the second cavity, the second cavity is communicated with a cavity formed after the telescopic needle tube wall is radially expanded to form a third cavity, the side face of the head of the telescopic needle is connected with an adjuster, the adjuster is matched with the sliding clamping groove, the needle head penetrates through the head of the telescopic needle to be communicated with the second cavity, and the needle head is fixedly connected with the head of the telescopic needle.

Preferably, a front limiting snap ring and a rear limiting snap ring are arranged in the first cavity, the front limiting snap ring and the rear limiting snap ring are respectively arranged at the front end and the rear end of the first cavity, and the front limiting snap ring and the rear limiting snap ring are fixedly connected with the inner side of the cylinder wall of the first cavity.

Preferably, a syringe front protrusion is arranged at the center of the front end of the syringe, and the syringe front protrusion is matched with the head protrusion of the telescopic needle in shape.

Preferably, the outer side of the cylinder wall of the first cavity is provided with scale lines of a telescopic needle.

Preferably, the groove wall of the sliding clamping groove is in a tooth shape, and a corresponding tooth-shaped bulge is arranged at the joint of the regulator and the sliding clamping groove.

Compared with the prior art, the utility model discloses following technological effect has:

1. the utility model can adjust the length of the needle head according to the requirement, which is beneficial to the accurate implementation of the operation;

2. the utility model discloses can withdraw the syringe needle inside the cylinder, avoid losing or forgetting to cover the emergence that the needle cap leads to stabbing because of the needle cap, also reduced cross infection's risk simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic view of a radial cross-section structure in an initial state of the present invention;

FIG. 2 is a schematic view of a radial cross-section of the present invention in use;

fig. 3 is a schematic front view of the present invention;

fig. 4 is a right side view schematic structural diagram of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4A;

icon: 1-syringe, 101-syringe front projection, 102, 103-limiting snap ring, 104-first cavity, 105-second cavity, 106-third cavity, 107-medicament scale mark, 108-telescopic needle scale mark, 109-sliding clamping groove, 2-telescopic needle, 201-needle head, 202-regulator, 203-telescopic needle wall, 3-piston and 4-piston rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The utility model discloses an injector, including cylinder 1, piston 3, piston rod 4, cylinder 1 is the syringe needle tube-shape, and the rear end of piston 3 is connected with the front end of piston rod 4, and the external diameter of piston 3 and the internal diameter adaptation of cylinder 1, the section of thick bamboo wall outside of cylinder 1 is equipped with medicament scale mark 107; the method is characterized in that:

the needle cylinder 1 further comprises a first cavity 104 and a second cavity 105, the thickness of the cylinder wall of the first cavity 104 is larger than that of the second cavity 105, and a sliding clamping groove 109 is formed in the cylinder wall of the first cavity 104;

a telescopic needle 2 is arranged in the first cavity 104, and the telescopic needle 2 comprises a needle head 201, an adjuster 202 and a telescopic needle tube wall 203; the telescopic needle tube wall 203 of the telescopic needle 2 is of a telescopic structure, the rear end of the telescopic needle tube wall 203 is connected with the front end of the tube wall of the second cavity 105, the second cavity 105 is communicated with a cavity formed after the telescopic needle tube wall 203 is radially expanded to form a third cavity 106, the side face of the head of the telescopic needle 2 is connected with an adjuster 202, the adjuster 202 is matched with the sliding clamping groove 109, the needle head 201 penetrates through the head of the telescopic needle 2 to be communicated with the second cavity 105, and the needle head 201 is fixedly connected with the head of the telescopic needle 2.

Preferably, a front limiting snap ring 102 and a rear limiting snap ring 103 are arranged in the first cavity 104, the front limiting snap ring 102 and the rear limiting snap ring 103 are respectively arranged at the front end and the rear end of the first cavity 104, and the front limiting snap ring 102 and the rear limiting snap ring 103 are fixedly connected with the inner side of the cylinder wall of the first cavity 104.

Preferably, a front needle cylinder protrusion 101 is arranged at the center of the front end of the needle cylinder 1, and the front needle cylinder protrusion 101 is matched with the head protrusion of the telescopic needle 2 in shape.

Preferably, the outer side of the cylinder wall of the first cavity 104 is provided with a retractable needle scale mark 108.

Preferably, the groove wall of the sliding groove 109 is tooth-shaped, and a corresponding tooth-shaped protrusion is arranged at the connection position of the adjuster 202 and the sliding groove 109.

The flexible needle tubing wall 203 of flexible needle 2 is extending structure, and syringe needle 201 links firmly with the head of flexible needle 2, slides regulator 202 as required, and regulator 202 drives the head of flexible needle 2 to the flexible needle tubing wall 203 of control flexible needle 2 is flexible to adjust the length that syringe needle 201 stretches out, the section of thick bamboo wall outside of first cavity 104 is equipped with flexible needle scale mark 108, the length that control syringe needle 201 that can be accurate through flexible needle scale mark 108 stretches out, is favorable to the accurate implementation of operation, and when not using, can withdraw syringe needle 201 to syringe 1 inside, avoid losing or forgetting to cover the syringe needle cap because of the syringe cap and lead to the emergence of stabbing, also reduced cross infection's risk simultaneously.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. An injector comprises a needle cylinder (1), a piston (3) and a piston rod (4), wherein the needle cylinder (1) is in the shape of a syringe needle cylinder, the rear end of the piston (3) is connected with the front end of the piston rod (4), the outer diameter of the piston (3) is matched with the inner diameter of the needle cylinder (1), and the outer side of the cylinder wall of the needle cylinder (1) is provided with medicament scale marks (107); the method is characterized in that:

the needle cylinder (1) further comprises a first cavity (104) and a second cavity (105), the thickness of the cylinder wall of the first cavity (104) is larger than that of the cylinder wall of the second cavity (105), and a sliding clamping groove (109) is formed in the cylinder wall of the first cavity (104);

a telescopic needle (2) is arranged in the first cavity (104), and the telescopic needle (2) comprises a needle head (201), an adjuster (202) and a telescopic needle tube wall (203); the telescopic needle tube wall (203) of the telescopic needle (2) is of a telescopic structure, the rear end of the telescopic needle tube wall (203) is connected with the front end of the tube wall of the second cavity (105), the second cavity (105) is communicated with the cavity formed after the telescopic needle tube wall (203) is radially unfolded to form a third cavity (106), the side face of the head of the telescopic needle (2) is connected with an adjuster (202), the adjuster (202) is slidably connected with the sliding clamping groove (109), the head of the needle (201) penetrating through the telescopic needle (2) is communicated with the second cavity (105), and the needle head (201) is fixedly connected with the head of the telescopic needle (2).

2. A syringe according to claim 1, wherein: the inner side of the cylinder wall of the first cavity (104) is fixedly connected with the front and rear limiting snap rings (102, 103).

3. A syringe according to claim 1, wherein: the front end center position of cylinder (1) is equipped with cylinder lordosis (101), cylinder lordosis (101) and the protruding shape adaptation of the head of slip needle (2).

4. A syringe according to claim 1, wherein: the outer side of the cylinder wall of the first cavity (104) is provided with retractable needle scale marks (108).

5. A syringe according to claim 1, wherein: the groove wall of the sliding clamping groove (109) is in a tooth shape, and a corresponding tooth-shaped bulge is arranged at the joint of the adjuster (202) and the sliding clamping groove (109).